Effects of node, internode and height position on the mechanical properties of gigantochloa atroviolacea bamboo

The development of the use of bamboo increased as non-wood material. The bamboo Gigantchloaatroviolacea is the most popular bamboo used as a construction material in some region of Indonesia. Some weakness bamboo are bamboo non-homogen material, sectional form non-prismatik, the straigthness stems not the same, on the culms guiler node and a cross section in hollow. Effects of node, internode and height position on mechanical properties of bamboo were evaluated. In this article, the mechanical properties of Gigantochloaatroviolacea bamboo was studied (shear, compression and tensile). In this study, selected of the mechanical properties of bamboo culms, located at different height were investigated with ISO 22157 and ASTM. The mechanical properties of bamboo at node, internode and height position were tested in air dry condition. Base on the test results of all properties strength were increased from bottom to top. Analysis of variance (ANOVA) showed of the effects of node and internode of least significant difference (LSD) except tensile parallel to grain of significant. The effect of hight position (bottom, middle and top) was significant except tensile strength perpendicular to grain of least significant difference (LSD). The interaction between node, internode and hight position was least significant difference (LSD) except tensile parallel to grain of significant. (c) 2014 The Authors. Published by Elsevier Ltd.